Synthesis, Structures and Properties of the Cerium Doped Hematite Co-existing with CeO_2
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概要
- 論文の詳細を見る
Cerium doped hematite powders obtained by polymeric complex method following the hydrolysis of FeCl3·6H2O and Ce(NH4)2(NO3)6. X-ray diffraction pattern of cerium doped samples obtained at 1000°C∼1200°C for two hours in air revealed some solubility of cerium ion in α-Fe2O3 over the composition range of 5%∼15 at% that were characterized by the shifting of X-ray diffraction peaks compared with the internal silicon standard. X-ray Photoelectron Spectra investigations revealed the existence of Ce3+ ion at higher temperature. Unit cell parameters were found to expand due to the incorporation of cerium ions into the hematite lattice. Field Emission Scanning Electron Microscopy studies showed that the growth of particles was suppressed in the appearance of cerium ions into the α-Fe2O3 lattice. Fe2-xCexO3 exhibits much lower magnetization due to the incorporation of non-magnetic cerium ions into the α-Fe2O3. Spectroscopy measurement evidenced that cerium doped hematite samples exhibited brighter yellowish red color tone than that of pure α-Fe2O3.
- 社団法人粉体粉末冶金協会の論文
- 2007-02-15
著者
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TAKADA Jun
Department of Physics, School of Medicine, Sapporo Medical University
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Nakanishi Makoto
Department of Chemistry, Faculty of Science, Kyoto University
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Ikeda Yasunori
Institute for Chemical Research, Kyoto University
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Fujii Tatsuo
Department of Internal Medicine and Cardiology, Graduate School of Medicine, Osaka City University
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Ikeda Yasunori
Institute For Chemical Research Kyoto University
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Fujii Tatsuo
Department Of Applied Chemistry Faculty Of Engineering Okayama University
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Takada Jun
Department Of Applied Chemistry Faculty Of Engineering Okayama University
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Nakanishi Makoto
Department Of Applied Chemistry Faculty Of Engineering Okayama University
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BHUIYAN Tarequl
Department of Applied Chemistry, Faculty of Engineering, Okayama University
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KUSANO Yoshihiro
Collage of the Arts, Kurashiki University of Science and the Arts
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Bhuiyan Tarequl
Department Of Applied Chemistry Faculty Of Engineering Okayama University
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Kusano Yoshihiro
Collage Of The Arts Kurashiki University Of Science And The Arts
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